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The five numbers on a Wi-Fi screen, what each one actually tells you, and why full bars can still mean an unusable connection in a crowded building.
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Wi-Fi 4, 5, 6, 6E and 7 are just friendlier names for 802.11n through be. Here is what each one actually changed, and which numbers on the box are fiction.
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A plain-English explanation of what a VPN does, what it does not do, and the three situations where turning one on genuinely protects you.